Truck side frame



March 31, 1925,

' J. A. LAMONT TRUCK SIDE FRAME Filed July 10, 1922 2 Sheets-Shegt 1 Y bkgzdlamozgj' W W IIIIII IIII marchal, 1925.

J. A. LAMONT TRUCK sum FRAME Filed July 10, 1922 2 Sheets-Sheet 2 4 fiZU/ZZOW Jkrzgimm I WW v Patented Mar. 31, 1925.

UiTED. STAT-ES eme assess; v

JOHN A. LAMONT,- GF CHICAGO; ILLIIIOIfi'ASSIG-NO'R T AMERICAN STEEL FOlJ'NJDRIES,:

OFVCIZICAGO, ILLINGIS, .AzCQR-POBAJEIONiOF NEW. JERSEY. v V

TRUGKrSIDE FR-AME.

Application filed an 10,

To all whom 1 2'25. may concern Be it lrnownrthet I, JOHN'A. LAM0Nr,"-e citizen of the United States, residing at'Chicago in the countyof Cook and Stateof Illinois have invented certain new and useful:.f[mproven1entsyin Truck Side Freshesof 'Whichthe followingois e specification This invention relates to railway car. truck sidelfrarnes, andfperticularlythos of the size-Wheel type When. a :side. frame vis cast inv a; single piece, (the pedestal jaws .and brakes hanger breekets .forni enlarged 1; ends,.- which are gripped by the mold so that shrinking during the cooling of the casting in the mold, is not uniform. As szresult thereof. trouble is sometimes era "rieneed' in .thsters 11s are delevopedv in those portions .ofthe casting intermediate of thegjewsm- One object/of the inventionis: to over- 601116111113 tendency there-may be for theside fremeito .ereelzvatsuch portions.

Anotherobjectis toprovide: a simple and durable. siee frame having, e. maximum amount of strengthewithout.enlincrease in Weight of material.

Another. obj eat is to provide aside efrenue adapted to. .meet the various requirements under service conditions.

These sndotiier vobjects are accomplished by 'nieans of the arrangements disclosed on the ecoompenyingflsheetsiof drawings, in Which- Fi ure 'lris a'top plenwiew of. wtrnck side, frame embodying myinvention;

F ignre 2..is.ev sideelevationflof the. some side frame;

Figure 8 .isaa side elevation of portion of the side: frame;

Figure f is aside .elelvationof one end of the side. frame, including. a1 brake hanger bracket and pedestal jaws v Figure 5 is a seetionoliview taken in the plane of line .5.-5 of F igure, 1

v Figure 6 is Li-sectioned .VlQW' taken-in-the plsneof line 66-.of Figure l;

Figure? is stop plan View of tion. of my invention Figure 8 iso. side elevation ofithe arrange ment shownhin Figurei:

Figure 9 is a side elevation of the .main part of the sidej'fraineshown. in Figure 8;

Figure 10 is a side .eleiationof .thebrake the main s 3110 diiice- 1922. SriaLHe. 5733952.

Figure l3 isa sectional wiew taken inthe.

plane of line 18 .1-3 of 'F igurew'i';

Figure -14 is 5e sectional: viewrsimilenr 0 that showniin F ijgure 12 endsh'owirig efunther .nrod'ification which is one: faof the-spreferreda embodiments avncli':

Figure 15 is a section showing; theeform which the main. channel, :1 ort ion shownoin Figure 9 may-"take if "desiredpthis also beingone' of the preferred embodimentspr The Various novel features ofmy; livention: will be apperent fr om the following description and' dr awings snd wilb =be-i P3217 tieu-ladrly pointed out in the appended cla'ims.

Referring first toFigures-1 IOGGHGhiSi-VQ, itwill be noted that the 'S11Bf-ff-LHI6 :iswmsde' up of three cast pieces; esniein central sidefmme- *nieinber '10 eucl two 'ierrd iside frame members" -11. The -.eentrs1 member- 210 is: pro vided with two downw rdl extending bracket per ions l2"eaolr of which ':.-forms one Well offsbolster"opening-the other well iii each I case being formed by theinner shoulder 13 011 the separate--=end men=ibers 11. The section" of the meeinfr'ame member 10 is channel shaped 31SSlTOWHFfpSItlGUlH/fl Y in :Figure 6. The downwardly extending side Wells 14 ofthesideframemember 10 are"provided withopenirigs -15 forthereception of pinsupon -whieh equailiz'ersynot shown, are: pivotally supported: As {shown particularly in F 'l'gure'lgthe srcle wal ls le converge-towardthe end of the=fran1e-n1ember and terminate -1n;spsceclwall portions 16 Whichere a, relatively 'snie l'l distance apart and are provided with -a, plurelity'o-f rivet holes 17 Adeptedtobis-received betWeen such side wail members 16' is :e =We'b l-S fOrmed onthe end inen'iberorcombined brake hanger bracket andew-inernberll.

This web '18 also is provided with rivet holes 19 which register with the openings 17 and through Ji' hich rivets may be pessedufo'r securely holding the end p eoes ll and main side member 10 together. Inthis s anreieonpiece are cored and nection the lugs 20 depending from the main frame member 10 are provided with rivet holes 21. The side wall 22 at the inner end of each member 11 is also provided with rivet holes 23 which register with the rivet holes 21.

In this arrangement in which the end portions, including the brake hanger braclrets 9 and the pedestal jaws 2 are separate 1. cm the main central side frame member 10, a division is made at a section practically over the point of support or jaws 2-1 where the stress in the casting under he working load is purely shear, By the arrangement of rivets above and below the parting line and on either side of the point of support, as shown, their maximum value is obtained in forming a rivet connection of this part.

It is proposed to drill the holes 15 in the main frame member 10 and the holes 25 in the end pieces 11 for the. pins supporting the outer ends of equalizing levers after the parts 10 and 11 are riveted together, and by reason of projecting lugs on the middle portion, the pins also form a connection between the members 10 and 11 so that the load is transmitted thereby directly to the middle portionof the frame and does not go directly on the rivets. 'hll of the rivets are arranged so that they are accessible for driving by amachine compression riveter and the side walls 16 and web 18 of the separate parts by reason of the U-shape, are free to be drawn to place against the corresponding portions of the other parts through pressure of the riveting machine.

Construction of the parts also permits of the necessary longitudinal adjustment of the end pieces 11 relative tothe main central frame piece 10, in order to bring the distance between the outer axles or from center to center of the jaws 24iexactly to. drawing dimensions, thus avoiding the necessity of machining the inner surfacesof the jaws 2%, which finishing isrequired in the integral or one, piece construction in order to correct a wide variation in shrinkage of individual castings. The rivet holes 17 in the main after the end members 11 and main central piece 10 are as sembled, bringing the distance between the center of the outer aws to an exact dimension, the holes 19 in the end pieces 18 will be drilled, and after the riveting is comleted the alined pin holes 15 and 25 will be drilled to exact distance relative to the center line of the truck.

This three piece construction can be made without any appreciable increase in weight over the single piece, as the end pieces, as well as the middle piece, by reason of their reduced length, can be cast with thinner sections than is possible with the integral casting and more than is required for strength.

This reduction in thickness will fully compensate for the extra weight due to over lapping of the parts to secure a riveted connection.

Referring now to Figures 7 to 18 inclusive, it will be noted that instead of using the castmetal middle piece 10, l have provided a rolled metal piece 26 of channel section, best shown in Figures 12 and 13. The end pieces 27 are secured to the middle piece 26 by rivets 28 on three noted by reference to Figures 12 and 13 that the section of the end pieces 27 along the lines 1212 and 1313 of Figure 7, are iii-shaped and lit up within the middle piece 26.. Each end piece 27 is provided with openings 29 for the reception of fulcrum pins for the equalizing levers. Separate brackets 30 are secured to the middle piece 26 cooperating to form bolster openings 31.

In Figure 14 there is shown a section similar to that shown 1n Figure lZ but using standard bulb angle iron in place of the special section shown in Figure 12, the parts 30 and 31 being riveted together in sub stantially the same way as shown'in Figure 12. v p

In Figure 15 there is shown in section a modified middle piece '32 somewhat similar to that shown in Figure '9, but in this case the lower edges of theU-shaped section are bulb shaped. This section is rollel flat and in a separate operation pressed or rolled to channel shape. The re-entering flanges or bulbs shown in Figures 14 and 15 have the advantage of relieving rivets which secure the end castings to the main side frame piece of a large percentage of the shearing stresses. It will be understood, in assembling the end pieces and the main central piece having bulb portions at lower ends ofthe sice flanges, as shown in Figures 1 1 and 15, that the end pieces will be slid in endwise to obviate the necessityof spreading outwardly the side flanges of the main central piece.

It is my intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

I claim: 7

1. In a six-wheel truck, a side frame comprising a main central piece having depending projecting portions,'and separate end pieces having portions complementary to said depending projecting portions and being'secured to said main piece at points where the working load is purely shear.

2. In a six-wheel truck, a side frame con prising a main central piece having depending projecting portions, and separate end pieces having portions complementary to said depending projectingportions, and being secured to said main piece at points where the working load is purely shear, each end piece including a brake hanger bracket and journal box jaws. V r

sides it helm 3. In a six-Wheel truck, a side frame comprising a main body having depending portions each forming a side Wall of a bolster opening, and a plurality of end pieces secured to said main body, each end piece including a brake hanger bracket, pedestal jaws and a Wall portion cooperating with the depending portions of said main body to complete the bolster openings.

4. In a six-Wheel truck, a side frame C0111- prising a main body piece having vertical flanges, and end pieces each having a single Web which extends upwardly between and engages said flanges and is secured thereto for completing the side frame, said end pieces each including a brake hanger bracket and journal boX jaws.

5. In a six-Wheel truck, a side frame comprising a main body piece having vertical flanges, and end pieces secured to said main body piece, each end piece including a brake hanger bracket and pedestal jaws, said vertical flanges and end pieces having aligned openings for the reception of equalizer pivot pins.

Signed at Chicago, Illinois, this 6th day of July, 1922.

JOHN A. LAMONT. 

